GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

source/gmp/drv/osal/linux/kernel/osal_semaphore.c

@@ -0,0 +1,95 @@
+/*
+ * Copyright (c) XMEDIA. All rights reserved.
+ */
+#include "osal.h"
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/printk.h>
+#include <linux/semaphore.h>
+#include <linux/slab.h>
+
+int osal_sema_init(osal_semaphore_t *sem, int val)
+{
+    struct semaphore *p = NULL;
+    if (sem == NULL) {
+        osal_printk("%s - parameter invalid!\n", __FUNCTION__);
+        return -1;
+    }
+    p = kmalloc(sizeof(struct semaphore), GFP_KERNEL);
+    if (p == NULL) {
+        osal_printk("%s - kmalloc error!\n", __FUNCTION__);
+        return -1;
+    }
+    sema_init(p, val);
+    sem->sem = p;
+    return 0;
+}
+EXPORT_SYMBOL(osal_sema_init);
+
+int osal_down(osal_semaphore_t *sem)
+{
+    struct semaphore *p = NULL;
+    if (sem == NULL) {
+        osal_printk("%s - parameter invalid!\n", __FUNCTION__);
+        return -1;
+    }
+    p = (struct semaphore *)(sem->sem);
+    down(p);
+    return 0;
+}
+EXPORT_SYMBOL(osal_down);
+
+int osal_down_interruptible(osal_semaphore_t *sem)
+{
+    struct semaphore *p = NULL;
+    if (sem == NULL) {
+        osal_printk("%s - parameter invalid!\n", __FUNCTION__);
+        return -1;
+    }
+    p = (struct semaphore *)(sem->sem);
+    return down_interruptible(p);
+}
+EXPORT_SYMBOL(osal_down_interruptible);
+
+int osal_down_trylock(osal_semaphore_t *sem)
+{
+    struct semaphore *p = NULL;
+    if (sem == NULL) {
+        osal_printk("%s - parameter invalid!\n", __FUNCTION__);
+        return -1;
+    }
+    p = (struct semaphore *)(sem->sem);
+    return down_trylock(p);
+}
+EXPORT_SYMBOL(osal_down_trylock);
+
+void osal_up(osal_semaphore_t *sem)
+{
+    struct semaphore *p = NULL;
+    p = (struct semaphore *)(sem->sem);
+    up(p);
+}
+EXPORT_SYMBOL(osal_up);
+
+void osal_sema_destory(osal_semaphore_t *sem)
+{
+    if((sem != NULL) && (sem->sem != NULL)) {
+        kfree((struct semaphore *)(sem->sem));
+        sem->sem = NULL;
+    } else {
+        osal_printk("%s - parameter invalid!\n", __FUNCTION__);
+    }
+}
+EXPORT_SYMBOL(osal_sema_destory);
+
+void osal_sema_destroy(osal_semaphore_t *sem)
+{
+    if((sem != NULL) && (sem->sem != NULL)) {
+        kfree((struct semaphore *)(sem->sem));
+        sem->sem = NULL;
+    } else {
+        osal_printk("%s - parameter invalid!\n", __FUNCTION__);
+    }
+}
+EXPORT_SYMBOL(osal_sema_destroy);
+